Whistle

Abstract

A referees sports whistle of mandolin shape is provided which has three rectangular whistle chamber elements of the same order of length contained within the mandolin shape of the whistle and arranged side-by-side in a common plane. An exhaust port is provided on the top surface of the whistle to exhaust air, blown into the whistle chamber elements, entirely through the top of the whistle. The whistle is manufactured from two separately moulded parts comprising a first top cover portion including the exhaust port and a second part comprising a main body part including a bulbous portion to be gripped at the sides thereof by the user.

What we claim is: 
     
       1. A pealess whistle comprising: a neck portion having a longitudinal axis and first and second longitudinal ends, said neck portion having a first part extending from said second longitudinal end along at least a portion of the length of said neck portion;   a mouthpiece defined at said first longitudinal end of said neck portion;   at least one curved depending wall, said wall extending from said first part of said neck portion on one side of said longitudinal axis of said neck portion;   at least three whistle chamber elements extending side by side in a common plane along at least a portion of the length of said neck portion from a mouthpiece opening of each said chamber element adjacent said first longitudinal end of said neck portion toward said second longitudinal end; and   exhaust port means defined through a surface of said neck portion between said first and second longitudinal ends and on a second side of said longitudinal axis of said neck portion opposite to said one side, for exhausting air blown into the mouthpiece,   whereby said neck portion and said said at least one wall together define a generally mandolin shape.   
     
     
       2. A whistle as in claim 1, wherein said exhaust port means is the sole means for exhausting air from said whistle chamber elements while air is blown into the mouthpiece whereby air passing into said whistle chamber elements through said mouthpiece openings is exhausted entirely through said second side of said whistle. 
     
     
       3. A whistle as claimed in claim 1, wherein said at least three whistle chamber elements have a length in the same order of magnitude and have a substantially rectilinear cross-section. 
     
     
       4. A whistle as claimed in claim 1, wherein the whistle chamber elements have a substantially similar cross-section to one another. 
     
     
       5. A whistle as claimed in claim 3, wherein the whistle chamber elements have a substantially square cross-section. 
     
     
       6. A whistle as claimed in claim 1, wherein said whistle consists of first and second molded parts welded to one another. 
     
     
       7. A whistle as claimed in claim 6, wherein one of said two molded parts comprises a top cover portion having said exhaust port means defined therethrough and a second of said molded parts comprises a main body part including said at least one wall and defines at least a portion of said whistle chamber elements. 
     
     
       8. A whistle as in claim 1, further comprising attachment means at said second longitudinal end of said neck portion for mounting said whistle to a lanyard or chain. 
     
     
       9. A whistle as claimed in claim 1, wherein said neck portion and said at least one wall are formed from a plastic material. 
     
     
       10. A whistle as in claim 1, wherein said whistle chamber elements are defined by partition walls extending longitudinally of said neck portion and at least partially into the mouthpiece defined at said first longitudinal end thereby to define said mouthpiece openings. 
     
     
       11. A whistle as in claim 1, further comprising ribbed grip means defined on said at least one wall. 
     
     
       12. A whistle as in claim 1, wherein said neck portion has a flat floor portion leading to a tapered floor portion and ledge means defined at an end of said tapered floor partion, said ledge means being defined adjacent said exhaust port means so that air flowing towards the mouthpiece from said whistle chamber elements is vented through said exhaust port means. 
     
     
       13. A whistle as in claim 12, wherein said ledge means are defined below said exhaust port means. 
     
     
       14. A whistle as in claim 1, wherein an internal cross-sectional depth of said whistle chamber elements is slightly greater than an internal cross-sectional depth of said mouthpiece. 
     
     
       15. A whistle as in claim 1, wherein said whistle chamber elements are defined by a large chamber which is divided into at least three chambers by partition walling, said large chamber being rectangular in cross-section and of constant cross-sectional depth.